Specify fonts

This should help the interface look more consistent across platforms.
The font choices are just placeholders: consistency is the main goal.

app-proto/main.css

@@ -2,6 +2,7 @@ body {
   margin: 0px;
   color: #fcfcfc;
   background-color: #222;
+  font-family: 'Lato';
 }
 
 /* sidebar */
@@ -33,6 +34,11 @@ body {
   font-size: large;
 }
 
+/* KLUDGE */
+#add-remove > button.emoji {
+  font-family: 'Noto Emoji';
+}
+
 /* outline */
 
 #outline {
@@ -127,6 +133,7 @@ details[open]:has(li) .elt-switch::after {
   width: 20px;
   padding-left: 4px;
   text-align: center;
+  font-family: 'Noto Emoji';
   font-style: normal;
 }